Document Type and Number:
Japanese Patent JPS556276
Kind Code:
B2
Application Number:
JP382773A
Publication Date:
February 14, 1980
Filing Date:
December 26, 1972
Export Citation:
International Classes:
G03B23/00; G11B15/67; G11B23/107; G11B23/26; G11B25/06; (IPC1-7): G11B23/10; G03B23/00; G11B23/26
Next Patent: HEAT LUMINESCENCE METER